Battery charger



FIG. 1 is a front, top, and right side perspective view of a battery charger;

FIG. 2 is a right side elevation view of the battery charger of FIG. 1 ;

FIG. 3 is a top plan view of the battery charger of FIG. 1 ;

FIG. 4 is a rear elevation view of the battery charger of FIG. 1 ;

FIG. 5 is a front elevation view of the battery charger of FIG. 1 ;

FIG. 6 is a left side elevation view of the battery charger of FIG. 1 ; and,

FIG. 7 is a bottom plan view of the battery charger of FIG. 1 . 

The ornamental design for a battery charger, as shown and described. 